1907. J MONKEYS OF THE GEN^US CERCOPITHECUS. 731 



leg from the knee ash-gvey. Under side silver-grey. Tail blackish 

 grey, tinged with olive above at the base, black distally ; paler 

 beneath. Whisker-hairs short. Coat thick, forming a kind of 

 mane on the shonlders and fringes on the belly and hind legs. 

 Tail extremely short, much shorter than the head and body 

 (55 : 90). 



Loc. Mountains east of Abaje Lake (10,000-12,000 ft.). 



This mountain form differs, as Neumann points out, from all 

 other species of Cercojnthemts of this group in the extreme 

 shortness of the tail. Unfortunately the description of other 

 characters is too brief to supply infoi'mation as to the affinities of 

 the species. 



Cercopithecus tantalus Ogilby. 

 Subsp. TANTALUS Ogilby. (Text-fig. 189, p. 732.) 



Cercopithecus tantalus Ogilby, P. Z. S. 1841, p. 33; Matschie, 

 SB. Ges. nat. Fr. Berlin, 1893, p. 216. 



? Cercojnthecus cJirysurus Blvth. J. A. S. Bengal, xiii. p. 477, 

 1844. 



? Cercopithecus sahaius E.eichenbach, Affen, p. 114, 1863 

 (in part.). 



? Cercojnthecus caUitrichns Forbes, in Allen's JSTat. Libr., 

 Monkeys, ii. p. 62, 1894 (at least in part). 



? Cercopithecus sahceus Pou.sargues. Ann. Sci. JSTat. (8) iii. 

 p. 224, 1896. 



Face as black as in C. sahceus and C. pygeryihrus ; no white 

 hairs on upper lip and chin. Whiskers long, growing upwards 

 and backwards and concealing or partially concealing the ears, 

 the summit of Jihe whiskers yellow, the ends of the uppermost 

 hairs lightly infuscated and speckled. A distinct white brow- 

 band, marked off from the whiskers laterally both by colour and 

 by a narrow black streak extending backwards behind the corner 

 of the eye. Whiskers shai-ply defined by their colour from the 

 top of the head. Colour of head, dorsal surface, and of limbs 

 very much the same as in C . cynosurus. Tail longer than head 

 and body, becoming paler at its posterior end, where in the adult 

 it is as yellow as in C. sahceus ; a tuft of usually white hairs on 

 each side at its base ; no red hairs beneath at the base. Hairs 

 round the callosities also white ; but beneath them in adult and 

 immature examples of both sexes there is a patch of orange or 

 rusty-yellow hairs. Scrotum in male slate-blue ; prepuce scarlet. 



S . Head and body 500 mm., tail (imperfect) 750 mm. 



Loc. Nigeria (Lakoja, Dahome\', Upper Benue River) up to 

 Lake Chad. 



A large number of specimens of this species have been exhibited 

 in the Societj^'s Gardens. For most of these, as for Ogilby's 

 unknown type, no locality was recorded. Recently, however, 



